@article{article83f8ec4c,
title   = {Zeroth-order phase-contrast technique},
author = {Pizolato Junior, José Carlos and Cirino, Giuseppe Antonio and Gonçalves, Cristhiane and Gonçalves Neto, Luiz},
year = {2007},
doi = {10.1364/ao.46.007604},
journal   = {Applied Optics}
}